Tree Farm Season is Finally Happening in the Gorgeous Apple Hill Region of Northern California! A Family Favorite Activity, Find Your Christmas Tree at One of the Many Christmas Tree Farms Open in the Apple Hill Area. Most are Open Weekends Only although You May Find a Few Open During the Week or By Appointment. This Photo is From Hillside Tree Farm, a Most Picturesque Location to Find Your Perfect Tree. Please Click Learn More to Be Directed to Hillside Tree Farms' Website.